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超高性能混凝土基本性能与试验方法
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本书为《超高性能混凝土基本性能与试验方法》(T/CBMF37—2018) (即T/CCPA7—2018)的技术支撑资料汇总,包括超高性能混凝土的性能分析与标准化,在应用中需要注意的问题、材料性能与取值建议,平行实验与结果分析等内容。本书可作为T/CBMF37—2018标准的技术说明及创新超高性能水泥基复合材料参考之用。
第1章 超高性能混凝土基本性能与试验方法(T/CBMF37—2018)
第2章 超高性能混凝土的性能分析与标准化
2.1 概述
2.2 UHPC的制备原理与发展历程
2.3 UHPC “超高”的关键性能分析与UHPC定义
2.4 国际上UHPC标准化工作进展与UHPC性能要求
2.5 T/CBMF37—2018标准的编制理念
2.6 T/CBMF37—2018标准与国外标准对比一览表
第3章 超高性能混凝土应用中需要关注的问题、材料性能与取值建议
3.1 超高性能混凝土的定义与特点特征
3.2 UHPC使用的原材料
3.3 UHPC拌合物的施工性能
3.4 UHPC的耐久性与适用环境
3.5 UHPC适用环境与服役寿命
3.6 UHPC的基本力学性能
3.7 关于抗渗性能、抗拉性能、抗压性能分级间的关系
3.8 超高性能混凝土的其他性能
3.9 超高性能混凝土的收缩特性
3.10 超高性能混凝土的各向异性与纤维取向影响系数
3.11 结构设计取值
3.12 关于试验方法的补充说明
3.13 性能检验与质量控制建议
3.14 预混料及其一般规定
3.15 引用标准规范
第4章 超高性能混凝土的平行试验与结果分析
4.1 标准编制过程
4.2 平行试验情况
4.3 总结
附录
编后语
超高性能混凝土(以下简称UHPC)作为现在和未来的重要水泥基工程材料,在国内外得到了广泛关注。经过四十多年的研究与发展,UHPC已进入实用化阶段,它也使得水泥基复合材料向着高强、高韧、高耐久方向不断迈进。当前,欧洲的UHPC技术相对成熟,日本、韩国、马来西亚、美国、加拿大等国紧随其后。从市场角度看,中国潜力。然而,我们在UHPC的标准化方面还未跟上时代步伐,应在较短时间内补上这一“短板”,为UHPC的应用和发展搭桥铺路。
过去二十年,我国一些高校、科研机构、生产和施工单位在UHPC的制备、性能表征与工程应用方面做了大量工作,如今相关工作正在蓬勃开展,不仅有望成长为一个新兴产业,也会促进一部分水泥制品升级换代。随着近年国内UHPC产品的不断推出,在结构设计、施工、质检、验收等环节,因缺乏相应标准而产生的困扰日益凸显,某种程度上阻碍了UHPC工程应用的进程,建立相应的系列标准势在必行。
为促进我国UHPC的制备与工程应用,提升该领域的整体技术水平,保证行业有序发展,中国混凝土与水泥制品协会(CCPA)率先组织编制了有关UHPC的技术标准。中国建筑材料联合会(CBMF)和CCPA 联合编制的《超高性能混凝土基本性能与试验方法》(T/CBMF37—2018)(亦即T/CCPA7—2018,以下简记为T/CBMF37—2018)现已颁布实施;有关UHPC结构设计、现浇施工和预制生产等技术规范也正紧锣密鼓地编制中。
T/CBMF37—2018主要规定了UHPC材料的基本性能与分级以及相应的试验方法。本书汇集了针对该标准编制而开展的部分相关工作,可作为该标准的背景材料及应用导读。全书共分4章,其中:
第1章为《超高性能混凝土基本性能与试验方法》(T/CBMF37—2018)标准全文,由编制组共同完成。
第2章为超高性能混凝土的性能分析与标准化,简要回顾了UHPC的发明、制备原理与发展历程;分析了UHPC的性能特征与其他水泥基材料的异同;对比了现行的UHPC国际标准;阐明了T/CBMF37—2018的编制理念与原则。本章内容由赵筠、师海霞执笔。
第3章为超高性能混凝土应用中需要关注的问题、材料性能与取值建议,概述了UHPC的定义、名称和性能特征,补充了T/CBMF37—2018 “基本性能”中未包含的其他特性、应用中需要关注的问题、材料性能与取值建议及质量控制部分内容,可作为结构设计、现浇施工和预制生产规范的部分参考。第3.1~3.5,3.8~3.10,3.13~3.15节及本书附录由赵筠执笔;第3.6~3.7,3.11~3.12节由路新瀛执笔。
第4章为超高性能混凝土的平行试验与结果分析,是T/CBMF37—2018编制时所开展的“平行试验”的数据汇总与分析报告,同时也简要介绍了该标准的编制历程,由路新瀛、师海霞执笔。
需要说明的是,已发布的和在编的UHPC国外标准多处于初级使用和不断完善阶段,我国的T/CBMF37—2018标准更是如此。由于我国目前可用于支持UHPC标准编制的实际工程数据还十分缺乏,加上编制人员的能力和水平有限,T/CBMF37—2018标准还存在许多不足之处,诚恳期望读者和应用单位批评指正,以便后续补充、完善。标准编制组也期望该标准能起到抛砖引玉的作用,为我国UHPC产业发展及推广应用添砖加瓦。
T/CBMF37—2018编制组
2019年3月20日
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